it's now been a year (since something happened) (see Molina)
Orthographic Variants:
yeyauh cexiuitl, yeyauh cexihuitl, ye yauh cexihuitl
Alonso de Molina:
yeyauh cexiuitl. ya anda envn año. s. que acontecio algo. &c. sic de alijs. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 35r. col. 1. Thanks to Joe Campbell for providing the transcription.